When did he tear his Achilles the first time?
I don't think you are understanding the anatomy of his injuries.
I'm only aware of the ACL that he came back from last year. ACL is the anterior cruciate ligament in the knee. Then he just tore his Achilles tendon, which connects the calf muscle to the back of the heel, on Sunday.
https://www.draftsharks.com/fantasy/injury-history/tredavious-white/9514